Conveyer.



P. G.' & 1. DONALD. GONVEYEB.

APPLICATION IILED JAN.23. 1911. 1 1 12,440. Patented 001.6, 1914. 6 SEEETSSHEET 1.

P. G. n B. I. DONALD.

GONVEYBB.

APPLICATION FILED JAN. 2s. 1911.

1,1 12,440. Patented 001. 6, 1914. 6 SHEETS-SHEET 2.

C o K t lil 27 l vz a P. G. L B. I. DONALD.

GONVEYER.

APYLICATION'IILED 52111.23, 1911. 1,1 12,440. Patented 001.6, 1914.

6 SHEETS-SHEET 3.

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P. G. & B. I. DONALD.

GONVEYBR.

APPLICATION FILED JAN.23, 1911.

1,1 12,440. ,Patented ont. 6, 1914,

6 SHEETS-SHEET 4.

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P. G. & B. I. DONALD.

OONVEYBB..

LPPLIOATIQI FILED JAILZS, 1911r 1,1 1 2,440. Patented oct. 6, 1914.

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B1 G. & B. I. DONALD. CONVBYEB..

APPLICATION FILED JAN. 23, 1911. 1 ,1 1 2,440. Patented oct. 6, 1914.

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. "UNITED sTATas PATENT OFFICE;

PERCY GEIKIE DoNALD AND BRUCE ISAAC DONALD, or LoNDoN, ENGLAND.

CONVEYEB.

Specification of Letters Patent.

Patenteaoet. 6, 1914.

Application tiled January 23, 1911. Serial No. 604,137.

To all whom it may concern: i l

Be it known that, we, PERCY GEIKIE DON- ALD `and BRUCE ISAAC DONALD, sub1ects of ,the King of Great Britain, and residents of more particularly to those intended for use in loading and unloading the cargoes of ships or such like vessels, whether they be at sea or at the quay side or any other places.

The principal object of the invention is to rovide .a conveyer which shall be altoget er handier, less unwieldy, and moreI portable and easily managed 'than those hitherto known, and which, moreover, will automatically adjust itself against any list or variation of level or distance of the ship in relation to the place from and towhich the material or goods haife to be conveyed.

lVith these ends in view, the improvements comprise, firstly, a pair of parallel endless chains, belts or ropes, with carriers arranged transversely between them, and having two hanging legs or loops; secondly, a beam or girder for carrying all the con veying mechanism and adapted to contain 1the whole of the conveying tackle when not in use, such girder being conveniently lifted into and out of position by sling chains and a derrick; thirdly, means for retaining the chains to facilitate the stowing of the conveying tackle within the girder or to enable additional lengths of chain to be added if desired; fourthly, a discharge frame for guiding the chains on the delivery side and for carrying a plate or roller or other form of stop, such frame being either suspended from the girder or connected with the quay 0r other place (nf-delivery; fifthly, adjustably suspended weights, which may be termed anchor weights', holding down't-he two hanging legs or loops of the endless chains; siXthly, a compensation bight in' the endless chains and a weight in the same to automatically take up the slack in the chains, and allow for the rise and fall of the vessel' and tide.

ln addition to the'foregoing, there are certain improvements in details as well Vas in the construction `and arrangement of the apparatus as a whole, which will appear from the following description.

, The conveying tackle comprises two endless parallel chains or the like which run upon idle rollers situated at intervals along each side of the girder, one of the legs of the tackle being adapted to hang down in the hold of the vessel and the other leg against the wall of the quay or the side of the lighter or other place at which the loading or unloading (as the 4case may be) is done. The individual carriers are suspended upon cross-bars which span across the two chains at regular intervals, being fastened into the links of such chains after the fashion of chain pins so as not to interfere with the passing of the chains over the sprockets, and the cargo is carried upward by one leg of the conveyer and downward by the other leg, until it is discharged automatically as further explained herein.` v

lVe will now proceed to describe our invention with reference to the accompanying l illustrative drawings, in which:-

Figure 1 is a diagrammatic side elevation of one form of the entire conveyershown in position unloading the cargo' of a ship alongside the quay; a,portion of the ship and quayl being also represented. Fig. 2 is a `side elevation, partly in section, ofone form of discharge frame on line 2-2 of F 13 looking in the direction of the arl Fig. 8 is a side elevation, partly in section, of another form of discharge frame. Fig. 4f is a front elevation of one end of the discharge frame shown in Fig.`3. Fig. 5 is a detail view of the driving gear bearings and Shafts. FigjG is a view similar to Fig.

l, illustrative of a conveyer adapted for transporting railway sleepers and the like. Fig. 7 is a side elevation of the conveyer shown in Fig. 6, as it appears when the conveying tackle is stowed away. Fig. 8 is an end elevation onl a relatively larger scale, of the inner legr of the conveyer shown in Fig. (l. Fig. 9 is a transverse section through the girder. Fig. l0 is a man of the discharge frame combined with a' roller type of discharge platform. Fig. 11 is a side elevation of Fig. l0. Fig. l2 is a detail side view of one of the brackets which serve as carrierswhen dealing with railway sleepers andthe like. Fig. i3 is a plan View of a discharge frame with a single discharge roller.

The same reference numerals denote the roo sary jfor these carriers 43 to be tilted over before descending by the overside leg, so as to carry the sleepers 42 upon their' other side. For this purpose each bracket (or each carrier) is provided with a tailpiece V( (Fig. l2) which Comes in contact with a fixed stop l5 situated on the top member oi the `girder 3. Before the carrier is 'tilted over, it is necessary for thesleeper 42 to be carried forward at a greater speed than the conveyer, the ellect of which is to transfer the sleeper t: om the carrier which has supf ported it to the. next carrier in front, whirl latter conveys it to the point of discharge. This transference is effected h v means of an :nfeelerator comprisinga pair olf short endless chains 5U forming a small horizontal conveyer raised slightlyY above the level ot' the main conveyer and driven by chain and sprocket gear at a higher speed, as mentioned.

For stowing the conveyor shown in Fig. l, a chain retainer. such as a hook 51, is secured into the eonveyer chain ll upon each side ot' the girder 5, near to the forward end. Une ct' the weights lT or lo'. is fastened down and the main driving gear will first draw up the bight. and then the leg of the convenver.y which is not held down. Yl`he slack of the endless el ain, together with the carriers and crossbars| (j. c. the whole oiI the conveying taclv'le) is gathered together along they top member ot' the girder 5. the chain l'oriuiug a series ol. oops fr), as shown in Fig. T. which ligure also shows the sleeper carriers gathered together along the girder. let'ore drawing up the remaining leg. it may be advisable to secure the chain to the girder by another retaining device or hool\v 5.). upon the bottom member oll the girder. 'lhe weight holding down this leg ma)v now be disconneetial and the leg lel't l'rce to risel until the whole gear is stowed away coinpactl)v within and around the girder. whereupon the driving gear is brought to rest. aud the whole apparatus may be removed.

ln the form illustrated in Figs. li and T, the bight is dispensed with, and therefore the overside leg ol` the conveyer is anule ol' euch a` length as to hang a sullicient dis tance below the discharge frame to allow for variations in level. This arrangement can be stowed in a manner similar to the foregoing. For the purpose or rigging for use, the order of stowing is reversed.

We claim-- l. In a loading and unloading apparatus. the combination with a frame, of uppei and lower carrier wheels on said frame, an endless carrier trained over said Wheels and having depending working end loops and a depending idler loop, a weight carried by the idler loop. and a weight for each Working end loop, each of said last named Weights being greatly in excess ot' the idler loop weight. substantially as described.

ln a loading and unloading apparatus, thev combination with a carrier support, an endless carrier adapted to be advanced on said support and having pendent looped ends adjacent the loading and unloading points, pockets each composed' of a Hexible strip of material having its ends connected with the carrier at points spaced apart a distance less than the length of the strip, whereby the resulting slack of the strip causes the pockets to always open up wardly, and means for collapsing said pockets to discharge the contents thereof.

In a loading and unloading apparatus, the combination with a carrier support, an endless carrier adapted to be advanced on said support and having pendent looped ends adjacent the loading and unloading points. pockets each composed of a exible strip of material having its ends connected with the carrier at points spaced apart a distance less than the length of the strip whereby the resulting slack of the strip causes the pockets to always open upwardly when traveling vertically up or down or in a horizontal position. and rolling mechanism for collapsingr said pockets to discharge the contents thereof at the unloading point, sul-stautially as described.

ln testimony whereof we allia our signatures in presence ol' two ni'tnesses.

llllCY GEIKlE DONALD. BRUCE ISA AC DONALD. lV itnesscs:

Alrrni'iz H. STANLEY, R. lVILsoN. 

